The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2000
Filed:
Mar. 12, 1999
Shinichi Yatsuzuka, Kariya, JP;
Yasumasa Hagiwara, Kariya, JP;
Advanced Mobile Telecommunication Technology Inc., Nisshin, JP;
Abstract
The linear compressor for compressing and expanding working fluid contained in a regenerative refrigerator is composed of a compressor casing in which a pair of pistons are disposed and a plurality of electromagnets for driving the pair of pistons. A pair of rods for driving the pair of pistons are also disposed in the compressor casing, and permanent magnets are mounted on the driving rods. The plurality of electromagnets are disposed outside of the compressor casing along the axis of the driving rods so that the electromagnets face the permanent magnets. The pair of driving rods are driven by magnetic force between the permanent magnets and the electromagnets which are excited by alternating current. The linear compressor can be made small in size and heat generated in the electromagnets can be easily dissipated, because the electromagnets are disposed outside of the compressor casing.